Title :
120-Channel Transmultiplexer Design and Performance
Author :
Aoyama, Tomonori ; Mano, Fumio ; Wakabayashi, Kiyohisa ; Maruta, Rikio ; Tomozawa, Atsushi
Author_Institution :
Nippon Telegraph and Telephone Public Corp., Yokosuka, Japan
fDate :
9/1/1980 12:00:00 AM
Abstract :
A 120-channel transmultiplexer has been developed which interfaces two FDM basic supergroup signals (2 x 60 channels) directly to the digital time division switch or digital transmission systems. The equiplnent exploits a block processing digital SSB-FDM multiplex/demultiplex scheme, and has been built using newly developed high-speed CMOS pipeline multipliers and variable length shift registers. System design considerations and hardware implementation techniques are described in detail as well as the measured performance.
Keywords :
Frequency-division multiplexing (FDM); Circuits; Current measurement; Demultiplexing; Digital filters; Digital signal processing; Hardware; ISDN; Signal processing; Signal processing algorithms; Switches;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOM.1980.1094825
